For one thing, MacRumors reports that Apple is telling its own Canadian and European service centers differently. “The keyboard has a membrane under the keycaps to prevent debris from entering the butterfly mechanism,” reads the company’s internal 2018 MacBook Pro Service Readiness Guide, according to the publication. If legit, that seems pretty clear.

Like most things, there’s still a point at which things fail. “With the addition of more particulate and some aggressive typing, the dust eventually penetrates under the sheltered clips,” iFixit says. Also, grains of sand appear to be an issue. But iFixit concludes that the keyboard seems far more resistant than the 2017 model.

iFixit previously reported the existence of the new membrane and noted that it’s a dead ringer for a patented Apple design called “Ingress Protection for Keyboards.”